后屏互动通信

app.js

@@ -3,6 +3,8 @@ App({
   globalData: {
     TEST_URL: "https://cashier.test.miyahub.net/",
     RELEASE_URL: "https://cashier.miyahub.com/",
+    appId: "2021001107617164",
+    frontScreenAppId:"2021001107603212",
   },
 
   onLaunch(options) {

app.json

 {
   "pages": [
-    "pages/payresult/payresult",
     "pages/landscan/landscan",
+    "pages/payresult/payresult",
     "pages/index/index"
   ],
   "window": {

const/actioncmd.js

@@ -2,4 +2,10 @@
 export const ACTION_PRINT_RESULT = "ACTION_PRINT_RESULT";
 
 //发送重打印指令
-export const ACTION_REPRINT = "ACTION_REPRINT";
+export const ACTION_REPRINT = "ACTION_REPRINT";
\ No newline at end of file
+
+//商品信息
+export const ACTION_GOODS = "ACTION_GOODS";
+
+//去结算页面
+export const ACTION_GO_BALANCE = "ACTION_GO_BALANCE";

pages/landscan/landscan.axml

@@ -44,9 +44,9 @@
         <image class="operat-icon" mode="aspectFit" src="/images/clear_shop_list.png" catchTap="clearGood"/>
       </view>
       <view class="operating-bottom">
-        <text class="total-num">共{{totalNum}}件商品，合计金额</text>
-        <text class="pay-price">¥{{payPrice}}</text>
-        <button class="go-pay" size="default" type="primary">收款</button>
+        <text class="total-num">共{{totalQuantity}}件商品，合计金额</text>
+        <text class="pay-price">¥{{totalPrice}}</text>
+        <button class="go-pay" size="default" type="primary" onTap="goPay">收款</button>
       </view>
     </view>
   </view>

pages/landscan/landscan.js

 var api = require("../../utils/api.js");
 import { API_SCAN } from '../../const/apiurl'
+import { ACTION_GOODS } from '../../const/actioncmd'
+import { ACTION_GO_BALANCE } from '../../const/actioncmd'
+import { ACTION_REQUEST_GOOD_INFO } from '../../const/actioncmd'
+
 Page({
   data: {
     //是否正在用券
-    couponUseing:false,
+    couponUseing: false,
     //0代表弹窗关闭 1代表手动输入条码弹窗 2代表会员 3.收款 4.退款 
     scene: 0,
     //总数量
-    totalNum: 0,
-    //应付款
-    payPrice: "0.00",
+    totalQuantity: 0,
+    //折后价格
+    totalPrice: "0.00",
+    //折扣
+    totalDisc:"0.00",
     goods: [
     ]
   },
   onLoad() { },
 
-  //键盘完成
-  onKeyBordFinished(data) {
-    let mockdata = '{"activityId": "5808753370","activityType": "Skus","activityName": "2020年新活动，中国加油","discnt": 100,"startTime": 1580877000000,"endTime": 1583423999000,"pic": "https://miya-ngm.oss-cn-hangzhou.aliyuncs.com/1560763177031148973127.png?Expires=1876123177&OSSAccessKeyId=LTAItcMpilplOYdV&Signature=9NTSNuDocXKQyr%2FbPlHooey3Vrg%3D","name": "test001","barcode": "09876","price": 100000,"salePrice": 100000,"hasDiscount": true}';
+  onShow() {
+    //开启后屏监听
+    let context = this;
+    my.ix.onBuddyMessage({
+      success: (res) => {
+        console.info(`onBuddyMessage success: ${JSON.stringify(res)}`);
+        if (res.action == ACTION_GOODS) {
+          //商品信息同步
+          my.hideLoading();
+          let viewGoodsInfo = res.data.viewGoodsInfo
+          if (viewGoodsInfo.goods != null && viewGoodsInfo.goods.length > 0) {
+            context.setData({
+              goods: viewGoodsInfo.goods,
+              totalPrice: viewGoodsInfo.totalPrice,
+              totalQuantity: viewGoodsInfo.totalQuantity,
+              totalDisc: viewGoodsInfo.totalDisc,
+            })
+          }
+        }
+      }
+    });
+  },
+
+  onHide() {
+    //关闭后屏监听
+    my.ix.offBuddyMessage();
+  },
+
+  //把所有的商品数据发送到后屏
+  sendGoodInfoToFront() {
+    let context = this;
+    var commonRequest = {
+        action:ACTION_GOODS,
+        data:this.data
+    };
+    my.ix.sendBuddyMessage({
+      target: getApp().globalData.frontScreenAppId,
+      data: commonRequest,
+      success: (res) => {
+        console.log("发送商品数据到前屏小程序成功 ===》" + JSON.stringify(res));
+      },
+      fail: (res) => {
+        console.log("发送商品数据到前屏小程序 失败 ===》 " + JSON.stringify(res));
+        //发送失败重试
+        context.sendGoodInfoToFront();
+      }
+    })
+  },
 
-    this.parseGoodInfo(JSON.parse(mockdata))
+
+  //键盘完成
+  onKeyBordFinished(barcode) {
 
     this.onKeyBordClose();
+ 
+    my.showLoading({});
+    var commonRequest = {
+      action: ACTION_REQUEST_GOOD_INFO,
+      data: barcode
+    };
+    my.ix.sendBuddyMessage({
+      target: getApp().globalData.frontScreenAppId,
+      data: commonRequest,
+      success: (res) => {
+        console.log("发送商品条码到前屏小程序成功 ===》" + JSON.stringify(res));
+      },
+      fail: (res) => {
+        console.log("发送商品条码到前屏小程序 失败 ===》 " + JSON.stringify(res));
+        my.hideLoading();
+        my.showToast({
+          type: 'fail',
+          content: '发送商品条码到后屏失败',
+          duration: 3000,
+          success: () => {
+          },
+        });
+      }
+    })
   },
 
   //  键盘关闭
@@ -37,70 +114,12 @@ Page({
   //清空商品信息
   clearGood(e) {
     this.setData({ goods: [] })
-  },
-
-  //转化商品信息
-  parseGoodInfo(goodinfo) {
-
-    //价格 分转元
-    goodinfo.quantity = 1;
-    goodinfo.price = goodinfo.price / 100
-    goodinfo.salePrice = goodinfo.salePrice / 100
-    goodinfo.discnt = goodinfo.discnt / 100
-
-    //总数量
-    let totalQuantityTemp = 0
-    //总价格
-    let totalPriceTemp = 0.00
-
-    //数量+1 
-    let isHasSame = false;
-    let lastgoods = this.data.goods;
-    let goodstemp = []
-    let goodtemp
-    lastgoods.forEach(function (item, index, array) {
-      if (item.barcode == goodinfo.barcode) {
-        let quantitytemp = item.quantity
-        item.quantity = quantitytemp + 1
-        isHasSame = true
-        goodtemp = item
-      } else {
-        totalQuantityTemp = totalQuantityTemp + item.quantity
-        totalPriceTemp = totalPriceTemp + item.price * item.quantity
-        goodstemp.push(item)
-      }
-
-    })
-    if (isHasSame) {
-      totalQuantityTemp = totalQuantityTemp + goodtemp.quantity
-      totalPriceTemp = totalPriceTemp + goodtemp.price * goodtemp.quantity
-
-      let nowgoods = []
-      nowgoods.push(goodtemp);
-      var newgoods = nowgoods.concat(goodstemp)
-      this.setData({ goods: newgoods })
-    } else {
-      totalQuantityTemp = totalQuantityTemp + 1
-      totalPriceTemp = totalPriceTemp + goodinfo.price
-      let nowgoods = []
-      nowgoods.push(goodinfo);
-      var newgoods = nowgoods.concat(lastgoods)
-      this.setData({ goods: newgoods })
-    }
-
-    //汇总
-    this.setData({
-      totalNum: totalQuantityTemp,
-      payPrice: totalPriceTemp,
-    })
-
+    this.calculation([]);
+    this.sendGoodInfoToFront();
   },
 
   //删除商品
   deleteGood(e) {
-
-  
-
     let barcode = e.target.id;
     let lastgoods = this.data.goods;
     let newGoods = []
@@ -110,7 +129,8 @@ Page({
       }
     })
     this.setData({ goods: newGoods })
-
+    this.calculation(newGoods);
+    
   },
   //减少商品
   decreaseGood(e) {
@@ -131,13 +151,12 @@ Page({
       }
     })
     this.setData({ goods: newGoods })
+    this.calculation(newGoods);
 
   },
   //增加商品
   increaseGood(e) {
-
     console.log(e);
-
     let barcode = e.target.id;
     let lastgoods = this.data.goods;
     let newGoods = []
@@ -151,16 +170,58 @@ Page({
       }
     })
     this.setData({ goods: newGoods })
+    this.calculation(newGoods);
+  },
 
 
+  //计算总价格  总数量  总优惠
+  calculation(goods) {
+    if (null != goods && goods.length > 0) {
+      let quantitytemp = 0;
+      let pricetemp = 0;
+      goods.forEach(function (item, index, array) {
+          quantitytemp = quantitytemp + item.quantity 
+          pricetemp = pricetemp + item.price 
+      })
+      this.setData({totalQuantity:quantitytemp,totalPrice:pricetem+''})
+      //数据同步到前屏
+      this.sendGoodInfoToFront()
+    }
   },
+
+  //跳转到支付结果页面
+  goPay(e) {
+    var commonRequest = {
+      action: ACTION_GO_BALANCE,
+      data: ""
+    };
+    my.ix.sendBuddyMessage({
+      target: getApp().globalData.frontScreenAppId,
+      data: commonRequest,
+      success: (res) => {
+        console.log("通知前屏跳转到结算页面 成功 ===》" + JSON.stringify(res));
+      },
+      fail: (res) => {
+        console.log("通知前屏跳转到结算页面 失败 ===》 " + JSON.stringify(res));
+        my.showToast({
+          type: 'fail',
+          content: '结算失败',
+          duration: 3000,
+          success: () => {
+          },
+        });
+      }
+    })
+
+  },
+
   //用券返回
-  couponBack(e){
-         this.setData({ couponUseing: false })
+  couponBack(e) {
+    this.setData({ couponUseing: false })
   },
   //使用券
-  useCoupon(e){
-       this.setData({ couponUseing: true })
+  useCoupon(e) {
+    this.setData({ couponUseing: true })
   }